Chabazite-containing molecular sieve, its synthesis and its...

Details Chabazite-containing molecular sieve, its synthesis and its... Chabazite-containing molecular sieve, its synthesis and its...

2006-08-22

2006-08-22

Sample, David (Department: 1755)

Chemistry of inorganic compounds

Zeolite

Organic compound used to form zeolite

C423S707000, C423S708000, C423S709000, C585S639000, C585S640000

Reexamination Certificate

active

07094389

ABSTRACT:
A crystalline material substantially free of framework phosphorus and comprising a CHA framework type molecular sieve with stacking faults or at least one intergrown phase of a CHA framework type molecular sieve and an AEI framework type molecular sieve, wherein said material, in its calcined, anhydrous form, has a composition involving the molar relationship:in-line-formulae description="In-line Formulae" end="lead"?(n)X2O3:YO2,in-line-formulae description="In-line Formulae" end="tail"?wherein X is a trivalent element; Y is a tetravalent element; and n is from 0 to about 0.5. The material exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.

REFERENCES:
patent: 4544538 (1985-10-01), Zones
patent: 5958370 (1999-09-01), Zones et al.
patent: 6334994 (2002-01-01), Wendelbo et al.
patent: 2002/0165089 (2002-11-01), Janssen et al.
patent: 2003/0069449 (2003-04-01), Zones et al.
patent: 2003/0176751 (2003-09-01), Strohmaier et al.
patent: 2003/0232006 (2003-12-01), Cao et al.
patent: 2003/0232718 (2003-12-01), Cao et al.
patent: 0 613 859 (1994-09-01), None
patent: 868846 (1961-05-01), None
patent: WO 95/05342 (1995-02-01), None
patent: WO 98/15496 (1998-04-01), None
patent: WO 03/078324 (2003-09-01), None
Barrer et al, “The Hydothermal Chemistry of the Silicates. Part VII.* Synthetic Potassium Aluminosilicates”, J. Chem. Soc., pp. 2822-2891 (1956).
Yuen, L.-T. et al, “A Product Selectivity in Methanol to Hydocarbon Conversion for Isostructural Compositions of AFI and CHA Molecular Sieves”, Microporous Materials 2, pp. 105-117 (1994).
Dahl, I.M. et al, “Structural and Chemical Influences on the MTO Reaction: A Comparison of Chabazite and SAPO-34 as MTO Catalysts”, Microporous and Mesoporous Materials 29, pp. 185-190 (1999).
Diaz-Cabanas, et al, “Synthesis and Structure of Pure Si02Chabazite: the Si02Polymorph with the Lowest Framework Density”, Chem. Commun. 1881-1882 (1998).
Skeels G.W. et al, “Synthesis and Characterization of Phi-Type Zeolites LZ-276 and LZ-277: Faulted Members of the ABC-D6R Family of Zeolites”, Microporous Mesoporous Mater; Microporous and Mesoporous Materials 1999 Elsevier Sci B.V., Amsterdam, Netherlands, vol. 30, No. 2, 1999, pp. 335-346.
Bateman, Charles A. et al, “Structure of Zeolite LZ-277”, Proc. Annu. Meet Microsc Soc Am; Proceedings—Annual Meeting, Microscopy Society of America 1994, 1994, pp. 784-785.
Wagner, Paul et al, Guest/Host Relationships in the Synthesis of the Novel Cage—Based Zeolites SSZ-35, SSZ-36, and SSZ-39, Journal of the American Chemical Society 2000, 122(2), pp. 263-273.

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